What is CVE-2026-9748?

CVE-2026-9748 is a medium-severity vulnerability in Mongodb, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2026-06-09.

How severe is CVE-2026-9748?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Mongodb

CVE-2026-9748

The $_internalConvertBucketIndexStats stage used PauseExecution as a way to signal "skip this document" when an index stats conversion failed. But PauseExecution is not a general purpose skip mechanism, but rather a TeeBuffer-internal sign…

EPSS: 0.003 (24.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mongodb
Mongodb Server — versions 8.3.0, 8.2.0, 8.0.0

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

cna@mongodb.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-9748?: CVE-2026-9748 is a medium-severity vulnerability in Mongodb, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2026-06-09.
How severe is CVE-2026-9748?: Medium severity. CVSS v3 base score is 6.5 out of 10.